Hours after closer Joel Hanrahan announced he would be undergoing season-ending surgery on his right forearm, Junichi Tazawa stepped in and surrendered a game-winning home run to Adam Lind to open the ninth inning as the Red Sox fell 3-2 to the Toronto Blue Jays on Saturday.

With Hanrahan sidelined and Andrew Bailey also on the disabled list, Tazawa (2-2) will serve as Boston's closer until Bailey is able to return from a biceps strain.

"It was a pitch he didn't execute and he paid for it," said Boston catcher David Ross. "Taz has been doing a really great job for us, he's a really good pitcher and he's one of our best.

"That's why they chose to put him in the closer role while the guys are out."

Red Sox manager John Farrell said before the game he was unsure if Bailey would require a rehab stint in the minors, and it remains to be seen whether he will be healthy enough to return Tuesday when he's eligible to come off the DL.

In the meantime, Tazawa will continue to get the ball in late-game and save situations.

"There's not one guy on this team that I don't have a ton of confidence in," Ross said.

After Boston rallied to tie the game 2-2 in the eighth, Tazawa replaced starter Clay Buchholz and promptly surrendered Lind's second homer of the season, a shot to straightaway center that quieted the crowd.

Farrell said the breaking ball was intended for the back foot. It didn't get there.

"He's been as powerful, he's had good secondary stuff, with the exception of the 2-2 breaking ball that doesn't get to the spot," Farrell said, disputing a claim about Tazawa's recent struggles. "It's not been a matter of stuff. Still, location is going to be the key in any situation."

Buchholz delivered another strong performance himself. The right-hander yielded two runs on six hits and three walks over eight impressive innings. He struck out four.

"Left a couple pitches up with runners in scoring position. They were able to put a bat on it," he said. "I've got to make better pitches at that point in the game."